Java Guava | binomial() method of IntMath Class
The
binomial(int n, int k) method of
Guava’s IntMath class accepts two parameters
n and
k and calculate the value of the binomial coefficient
.
If the calculated value overflows the maximum value of an integer than the method returns Integer.MAX_VALUE or in other words the maximum value of an integer.
Syntax :
public static int binomial(int n, int k)
Parameter: This method accepts two parameters
n and
k and calculate the value of the binomial coefficient
.
Return Value : The method returns the binomial coefficient of n and k.
Exceptions : The method binomial(int n, int k) throws
IllegalArgumentException if n
< 0, k
< 0 or k
> n.
Below examples illustrate the binomial() method of IntMath class:
Example 1 :
import java.math.RoundingMode;
import com.google.common.math.IntMath;
class GFG {
public static void main(String args[])
{
int n = 5 ;
int k = 2 ;
int ans = IntMath.binomial(n, k);
System.out.println( "Binomial Coefficient of " + n
+ " and " + k + " is : " + ans);
int n1 = 15 ;
int k1 = 9 ;
int ans1 = IntMath.binomial(n1, k1);
System.out.println( "Binomial Coefficient of " + n1
+ " and " + k1 + " is : " + ans1);
}
}
|
Output:
Binomial Coefficient of 5 and 2 is : 10
Binomial Coefficient of 15 and 9 is : 5005
Example 2 :
import java.math.RoundingMode;
import com.google.common.math.IntMath;
class GFG {
static int findBinomial( int n, int k)
{
try {
int ans = IntMath.binomial(n, k);
return ans;
}
catch (Exception e) {
System.out.println(e);
return - 1 ;
}
}
public static void main(String args[])
{
int n = 5 ;
int k = 7 ;
try {
findBinomial(n, k);
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
java.lang.IllegalArgumentException: k (7) > n (5)
Reference :
https://google.github.io/guava/releases/20.0/api/docs/com/google/common/math/IntMath.html#binomial-int-int-
Last Updated :
23 Jan, 2019
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